| 石墨炉原子吸收光谱法测定粮食中的镉 |
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| 引用本文： | 李松,李林波,刘佳莉,顾声音.石墨炉原子吸收光谱法测定粮食中的镉[J].绵阳师范学院学报,2012,31(2):43-45. |
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| 作者姓名： | 李松 李林波 刘佳莉 顾声音 |
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| 作者单位： | 绵阳师范学院化学与化学工程学院,四川绵阳,621000 |
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| 摘 要： | 采用石墨炉-原子吸收光谱法测定煤矸石土种植的三种粮食中镉元素含量。试验结果表明,加入40μg.mL-1硝酸铵作为基体改进剂时,镉元素灰化损失减小。仪器检出限可达到0.147 ng.mL-1,该方法精密度RSD为3.10%。在最佳测定条件下,粮食样品加标回收率为95.50%～101.32%之间。该方法简便准确,用该法测定矸石土种植粮食中镉含量获得满意结果。
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| 关 键 词： | 石墨炉原子吸收光谱法 粮食 镉 |
Determination of Cadmium in Grains by GFAAS |
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| LI Song,LI Lin-bo,LIU Jia-li,GU Sheng-yin.Determination of Cadmium in Grains by GFAAS[J].Journal of Mianyang Normal University,2012,31(2):43-45. |
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| Authors: | LI Song LI Lin-bo LIU Jia-li GU Sheng-yin |
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| Institution: | (School of Chemistry & Chemical Engineering,Mianyang Normal University,Mianyang,Sichuan 621000) |
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| Abstract: | In this paper,a method for determination of cadmium in three grains raise in coal gangue is introduced by graphite furnace atomic absorption spectrometry(GFAAS).It is found that ammonium mitrate is more suitable for matrix modifier than ammonium dihydrogen phosphate which significantly increases the sensitivity of the method.The detection limit could reach a low level of 0.147 ng·mL-1.Under the optimum experimental conditions,the average recovery is 100.6% and the relative standard deviation is 5.5 %(n=6).The established method is simple,rapid and accurate.It is applied to the determination of cadmium in grains,and satisfactory results are achieved. |
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| Keywords: | GFAAS grains cadmium |
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